Locomotive fire-box.



PATENTBD APR. ll, 1905.

C. VANDBRBILT. LOGOMOTIVB PIRE B0X.

APPLIUATION FILED MAB.. 3, 1902. BENEWED SEPT. 17, 1904.

7 SHEETS-SHEET 1.

NO- 787,241. PATENTED APR. 11, 1905.

G. VANDERBILT.

LOGOMOTIVB PIRE B0X.

APPLICATION FILED MAR. 3,1902. BENEWED SBPT.17.1904.

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PATENTED APR. 11, 1905.

'IBHEETS-SHEET 3.

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LOCOMOTIVB FIRE BOX.

APPLICATION FILED MAB..3,1902. RBNBWED SEPT. 17, 1904.

@1f/,v JM/'QMML4 0%@ No. 787,241. PATBNTED APR. 11, 1905. 0. VANDBRBILT.

LoooMoTIvE FIRE B0X.

APPLIUATION FILED MAR.3,1902. RENEWED SEPT. 11.7I 1904.

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C. VANDERBILT.

LOCOMOTIVB FIRE BOX.

APPLIGATION FILED MAR.3,1902. RBNEWBD sBPT.1'1, 1904.

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` #www f v v f 'IN y (f7/y 11727-140441 No. 787,241. PATENTBD APR. 11,1905. C. VANDBRBILT.

LOCOMOTIVE FIRE BOX.

APPLICATION FILED MAB..3, 1902. RENEWED SEPT. 17. 1904.

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115 115 326 .3271329 fz ,f/ L l 330 ,ffy 1 3,34 o a o n l] ,if f/ o o on Y l8- 11;@ 355 o 3f-7 250e P 1 :j 328g J0 h i l0 323W/ 110 E. g zff/ 3"`x-zf8 W mf 1 Egg'. 7 /ge e e/ Geef /novg' ce est@ )Patented April 11,1905.

@Fries CORNELIUS VANDER-BILT, OF NEM' YORK, N. Y.

LOCOIVIOTIVE FIRE-BOX.

SPECIFICATION forming part of Letters Patent No. 787,241, dated April11, 1905.

Original application filed December 17, 1900, Serial No. 40.182. Dividedand this application filed Marcli 3, 1902. Renewed September 17, 1904.Serial No. 224,359.

le it known that I. GonNnLtUs \".\Nmuunr/r, a citizen of the UnitedStates, residingin the borough of Manhattan, in the city of New York.county and State of New York, have invented certain new and usefulImprovements in laicomotive Fire-Boxes, &c., of which the following is aspecification, this application being a division of application, SerialNo. 40.151, liled December IT, 1900.

'lhis invention relates generally to furnaces for boilers` and moreespecially to furnaces adapted for use in connection with water-tubeboilers.

'l`he invention is illustrated in the aecomsupported by a p m \\'truck,the wheels S and axles 9 of which are indicated in dotted lilies l i 1nFig. l. i

panying drawings as embodied in a structure j which is speciallydesigned for use upon or as a part of a locomotive having a water-tube.i

boiler; but it will be understood that various features of the inventionpossess utility without reference to their use with the particular typeof boiler shown or in a locomotive and that the several features ofimprovement are uot necessarily associated wit-h one anotherin a commonstructure, but that some of the features are capable of useindependently of others.

'l`he invention will be fully described hereinafter with reference tothe accompanving drawings, in whichw Figure l is a partial sideelevation of a loeomotivt` equipped with the improved fnr nace. Fig. 2is a general perspective view of the framework of a locomotive shown inFig. l. Fig. 3 is a longitudinal central section through the tire-boxsection of a locomotive. Fig. 1 is a longitudinal cent-ral sectionthrough the forward part or smoke-box section of a locomotive. Fig. 5 isa view of a locomotive shown in Fig. l, partly in rear elevation andpartly in section on the line Y V of Fig. l. Fig. (i is a transversesection on the line YI Vl of Fig. l. Fig. T is a transverse section onthe line vVII Yll of Fig. l.

'l`he scale of Figs. 3 to T is larger than that of Figs. l and 2.

In order that the functions of the several features of the improvedfurnace may be. read- 'l`he intermediateframe by which the boiler j isdirectly supported comprises two longitudinal girders 10, rigidlysupported upon the main frame by chairs or castings 1l 12 and tiedtransversely by three strntswa forward strut F F. an intermediate strutl) l) just forward of the lire-box section, and a rear strut B B .instVforward of the rear ends of the girders. 'lhe intermediate frame heldrigidly to the main frame at its end by the chair l2 and by itsconnection with the cylinder-casting through the cylindrical smokebox.Both chairs Il and 12 are rigidly secured to the chords of the mainframe.

The rear strut l B, Figs.,2, 3, and 5, is builtupofthecentralcompression-web23,strength i ened and stayed by suitableangle-irtms, and

supports at its topa cradle for the two drums of the boiler, hereinafterto be referred to, such cradle comprising a llat plate 32, curvedupwardly at its ends. and an intermediate chair or casting 3l. the base3T of which is l provided with longitudinal apertures 39 for the bolts0, by which the chair is secured to the plate 3; so that it may movethereon longitudinally.

'Ihe strut l) l) (shown in Figs. 2, 3, and 6) likewise comprises acentral or compression plate 50, strengthened and stayed by suitableangle-irons and having an aperture 53 for the passage of the products ofcombustion. This strut is supported upon and secured to the side girders10, and itself supports cradles Vfor the boiler-drums, such cradlescomprising end chairs and a central chair (5t), which is also adaptedfor longitudinal movement, as described with reference to the centralchair of the strut B B. y

The strut F F (shown in Figs. 2 and 4) comprises a base-plate 84,secured to the side girders 10, plate-posts 85, and a plate or casting87, the latter, with the plates 85, forming the chair 12. The maincompression-plate 95 of this strut rests upon the base-plate 84 and isfirmly secured thereto. It is formed with an aperture 99 for the passageof the products of combustion and at its top supports the cradlebase-plate 100, the ends of which are curved upwardly. A central chair107 is secured to the base-plate by bolts which pass through transverseslots in the lower web to allow of lateral movement.

The boiler or generator with which the furnace is herein shown ascombined comprises a pair of longitudinal drums, side headers locatedtransversely farther apart than the two upper drums and at a lowerlevel, both drums and the side headers having substantially the samelongitudinal extension, and a lower or intermediate header located belowthe plane of the side headers and centrally. The upper drums 124 ndtheir support on the struts B B, D D, and F F, the intermediate framedirectly supporting them Iand their appurtenant weight. They arepreferably secured rigidly to the front strut and iiexibly to the rearand central struts to allow of relative movement. The steam-space of thedrums is connected by a series of short pipe-sections 125 with acylindrical dry pipe 126, closed at the rear end by a cap 127 andsupported between the drums on chairs 128, as shown in Figs. 3 and 6,which rest between and on the drums. The front end 129 of the dry pipeextends into the smoke-box 130 and downwardly to the throttle-box 131,from which extend the branch pipes 132 to the cylinders 133, as shown inFig. 4. As is customary in locomotive practice, the front end of theframes and cylindrical smoke-box section are secured together by casting125, which is the same as is usually provided for this purpose.

The side headers 134 terminate substantially within and at the front ofthe rear strut B B, Fig. 3, and are connected, respectively, with thelower half of the corresponding drums at one side of the vertical axisthereof, Fig. 6, and to the rear of the strut D D, or, in other words,within the precincts of the fire-box, by a gang of water-tubes 135, Fig.6, disposed in reverse-curve form, having horizontal outwardly-extendingsections 136, vertical sections 137, and lower and outer ends 138,converging to the side headers 134, the upper ends 136 entering thelower half of the corresponding drum and all located substantially awayfrom or outside of the opening 53 through the strutD D, said tubes beingin vertical and horizontal series or in banks not so regularly placed.

- interfere with the free circulation.

Immediately forward of the central strut D D the boiler-tubes are notonly arranged in vertical and horizontal series or banks, but have atwofold or duplex diposition.

By reference to Figs. 6 and 7 it will be noted that the tubes 139,extending between the lower half of each upper drum 124 and the tubesheet 140 of the lower intermediate header 141, are substantiallystraight up and down and form a bank immediately in front of the opening53 through the strut D D to at once engage the products of combustion inthe passage thereof from the fire-box to the smokebox and that thedisposition of the tubes 142 between the lower half of each drum 124 andthe tube-sheet 143 of the side headers 134 is the reverse of the tubes135 in that the vertical portions 144, Fig. 6, form a head 145 in frontof the opening 53 and then extend outwardly at 146 to the tube-sheet143, which latter extends between those parts to the rear of the strut DD.

The arrangement of tubes, drums, and headers, as will be seen byreference to Figs. 6 and 7, substantially fills up transversely andlongitudinally the entire channel which is formed for the passage of theproducts of combustion between the struts D D and F F, therebypractically lling up the entire central or intermediate section of thelocomotive with watertubes adapted to be directly engaged by theproducts of combustion.

To furnish air for combustion, holes 24 are cut through the web-plate ofthe support B B about nine or ten inches above the casting. The airwhich is supplied beneath the lire passes through the holes and throughthe dampers in the ash-pan to the under side of the grate. The air whichis admitted over the grate passes through the fire-doors or damperswhich may be placed in the fire-doors and are not shown in the drawings.

The course of the products of combustion is over the fire-brick arch,through the opening in the second strut or support, the iron plate ofwhich is protected by fire-brick, (and preferably a little asbestoslagging between the fire-brick and the plate,) between the tubes whichconnect the bottom or central header with the drums, and also at thesides between the tubes from the side headers. The spacing of the tubesis such that at the center, where the exhaust of the engine wouldnaturally produce the greater draft, the tubes are placed closetogether, and at the sides, where the draft may be expected to be less,the tubes are placed farther apart, with the intention of equalizing asfar as possible and spreading' out to the greatest extent practicablethe products of combustion, so that all of the heat developed by thecoal may be utilized for the production of steam. The water must be fedto the boiler at such a place that it does not This may be accomplishedby feeding at either end of IOO the drums or at either end of theheaders or centrally in the top drum at the location of the center strutif the temperature at this point permits.

Fire-brick may be employed to protect the parts in the interior, wherethe heat is intense. ln the lire-box section this is disposed along' thesides, as shown in section in Fig. 6, and comprises vertical portions315, having' the lower thick and outwardly-extending portion 316 andinclined curved portions 31T, all being secured against the inside ofthe sheathing' and its framework before described in any usual ordesired manner. Between the drum-supporting struts in this sectionhollow lire-brick 31S are placed between the crownlining' 31T and theouter flanges 1st?) 150 of the drums to prevent the products ofcombustion from passing' above the drums. These sections of brick mayall find support at their ends in the framework of the struts and in anyother desired way.

The opening' 52") in the strut D D, leading into the intermediatechamber, is lined with tire-brick, as indicated in Fig. 3, that at thebottom, 319, being' extended over and about the upwardly and rearwardlyvinclined plate T9 to form the lire-box deflector or arch and linding' aseat on the shelf T5 of the channelbar H. This lining' extends Vforwardthrough the opening' in the strut and turns down, as at 321), over thesheath or covering 60 to the plate 211. Similar brick lining's 321 322are provided for the top of the opening to cover the angle-irons 61 andadjacent plate. Such lining' may also be extended over and about all theexposed parts of the framework or wherever desired.

lYithin the intermediate section the vertical sides 218 of thesheathing-box on each side of the lower header are lined with brick 323,Fig'. i, while the heat is confined so as to strike the tubes 112 on thelower side of the bank by means of hollow quadrang'ular bricks 324e,resting at each side on the upper corner of the sheathing' and frame 325and against the angle-plate 326, which is supported by a plate 32T.riveted to the vertical web 328 of a sheathing-bracket 32S, carried bythe plate 25W. A horizontally-disposed layer 329 is carried by saidplates 328 or by the horizontally-disposed plate 32TALL carried thereby,and an additional brick 330 is employed to reach over the top of theg'irder lOto the side sheathing- 225. Above the side headers thevertical plates 226" are extended lower than the horizontal plates 226,as at 331, and have riveted to their lower edges the inwardly-projectingangle-irons 332, which form support-s for lirebrick lining' above theheader and tubes, such lining' consisting' of the hollow triangularportion 2531, having' the vertical wing Upon this is another strip, 336,following the contour of the tubes and fitting closely ag'ainst theoutward flanges 119 150 of the drums 12st.

A lining' of fire-brick may also extend over the drums inside thecrown-sheathing'. lt will be noticed that this lining' about the headersand drums follows in g'eneral the curvature of the tubes and thatconsiderable material is saved by the hollow construction of the brick.

Fire-brick may also be placed about the exposed portions of the strut-F, as indicated in Fig'. l, the bottom part r-100 extending' through theopening' and down on each side, as at 401 and 402, and being' slantedoff, as at 10?), into the smoke-box. The upper part L10-1 extendsthrough and upward. as at y105, to cover the edges of the hole andframing' and may cxtend about the whole circumference of the opening, asindicated by the numeral 406.

It will of course be understood that the described disposition of thelire-brick is by no means the only one that could be utilized; but Yformany purposes it is considered preferable. Y

The ash-pan L19 beneath the lire-box, Figs. 3 and 6, comprises arectangular box-like base or bottom 250, having' vertical sides andbeing' sutleiently narrow to lit between the side frames 273 of thetruck. lt is provided with end apertures having' swinging' doors 251 toclose the same. The lower longitudinal corners of the same are formedwith bars 252, grooved on their opposing' faces to receive the bottomsheet 253, the side sheets and end doorframes being' suitably securedthereto by means of angle-irons. The bottom of the pan is arched at 254to raise it out of possible contact with the axle` and at its forwardend a hole 255 is provided, with a sliding' cover 256 therefor. Accessto the pan for any purpose may thus be had at either end or through theaperture 255. This box is supported from the rear and intermediatestruts and the side g'irders of the intermediate frame and receives theashes from the whole grate area by the flaring or funnel-like sides Tand corresponding' ends 258, which are secured to the edges of the boxby angle-plates 259 and by similar plates 260 to the flanges 261 of thedepending' vertical webs 262 of the grate-supporting bars 262, which aresecured to the side girders 10. The front end 25S is riveted at itsLipper edg'e to the angle-plate T8, bolted, as before described, to`flange 'T' of the transverse channelcasting' is of the strut l) 1). Thercar plate 258 is secured to the flanged iron 4S, which is shown boltedto the channel-bar 45. The latter plate has apertures covered by thesliding' plates 263 to provideadmission to the ash-pan from the rearthrough holes 24 in the transverse plate of the rear strut B B. Theflaring' sides 25T and ends 258 are tied together by corner angle-bars,so as to make a strong' construction throughout. Boxes 25T", Fig'. 6,are built up, as shown, in the sides 257 of the ash- Q pan to provideroom for the drive-wheels 6.

The g'rate 26%, which may be of the usual construct1on and provided withthe usual VIOO ISO

dumping levers and rods extending to the rear and adapted to be operatedfrom the cab, comprises four sections, wh ich are supported at the sideson a projecting ledge 264L'of the box and on channel-castings 26s,secured to the side girders 10, immediately beneath the vertical web ofthe angle-irons 18. At the center a longitudinal bar 265 extends thelength of the {ire-box and is supported at its ends upon the frameworkin any desired manner, the gratebars resting upon the horizontal webs266 of said bar. The sections are separated transversely by a beam 265,located about midway of the box and secured at its ends to the frameworkby any suitable means. As shown, the grates are located above thedrive-wheels of the locomotive and extend from side to side of theintermediate frame. They are also above the plane of the lower header141. Filling or other bars 265b are placed in front and rear of thegrate.

The Stoke-doors 280, Fig. 3, which are used to close the openings 25 arepractically segments of spheres of appropriate size, havingoutwardly-bent or Hat circular iianges adapted to fit closely againstthe flat rings at the edges of the holes in the plate 23. Suitablehinges 280a are provided for the same at one A side of the opening, anda catch 280b is provided at the other, with which a latch on the doorengages. The curved portions of said doors may be provided with openings282, which may be closed by a plate 283 of suitable form fittingcloselyover the outside of said portion and adapted to be turned by ahandle 284 to open or close the same. A disk or other del'lector 285 mayalso be provided and supported on the door by a standard 286. Throughthese doors coal may be thrown to any part of the grate.

I claim as my inventionl. In a furnace for steam-generators comprising afire-box section and another section communicating therewith, afire-brick deflector located at the lower edge of the opening betweenthe sections and comprising a transverse plate or web secured to theframe and lire-brick placed about it on both sides.

2. In a furnace for steam-generators comprising a fire-box section andanother section communicating therewith, a fire-brick deliector locatedat the lower edge of the opening between the sections and inclininginwardly and lupwardly into the lire-box section, said deflectorcomprising a transverse web or plate secured to the frame and lire-brickplaced about it on both sides.

3. In a furnace for steam-generators, the combination of a framework, across-strut and girders, a fire-box section and an intermediate sectionseparated by said strut, an upwardlyinclined plate secured to saidcross-strut, and a fire-brick covering for said plate.

4. In a furnace for steam-generators, the combination of a framework, alire-box section and another section, a transverse strut separating saidlire-box section and other section and having an opening therethrough,and a deiiector for the lire-box comprising an inclined plate attachedto the strut of the lower side of the opening, afire-brick covering forsaid inclined plate.

5. In a furnace for steam-generators, the combination of a fire-boxsection, an intermediate section, a frame, and a transverse plate toseparate' such sections supported by the frame and having an openingtherethrough, the opening in said plate being lined with fire-brick.

6. In a furnace for steam-generators, the combination of a fire-boxsection, another section, a frame, a transverse strut on said frameseparating the fire-box from the other section and having an openingtherethrough for the passage of the products of combustion, andfire-brick applied to the exposed parts of said strut.

7. In a furnace for steam-generators, the combination of a lire-boxsection, a forward section, a grate in the lire-box section, and aheating-surface in the other section, a wall separating the two sectionsand having an opening therethrough, and fire-brick covering the entirelower edge ofthe opening from the grate on one side through the openingto the heating-surface on the other side for protecting the frame andcooperating devices.

8. The combination of a frame, a boiler carried thereby, a smoke-boxsection and another section, a partition therebetween having' an openingthrough which the products of combustion are adapted to pass, and afire-brick lining for said opening.

9. The combination of a frame, agenerator carried thereby, a fire-boxsection, a smokebox section, and an intermediate section, partitionsbetween the latter section and the others having openings therethroughfor the passage of the products of combustion, and lire-brick liningsfor said openings.

l0. The combination of a frame having cross-struts, a steam-generatorcarried by said struts and frame and comprising a lower header suspendedbeneath the struts, the said struts having openings therethrough for thepassage of the products of combustion, and a lire-brick lining for saidopenings extending down on the sides of the struts to the said header,and over the exposed portions on the other sides of the struts.

1l. The combination of a frame having cross-struts, a generator having aheader, the said struts having openings for the passage of the productsof combustion, devices to support said header located on said strutsbeneath the opening, and lire-brick linings for said openings extendingover the said devices.

l2. In a locomotive, the combination of a frame,a generator supportedthereby,a sheathing also supported by said frame and comprising Verticalside plates, horizontal plates attached to the vertical plates abovetheir lower edges`r angle-irons secured to said lower edges, and ntire-brick liningr for said h0ri- Zontnl and vertical plates andsupported hy said :ingle-irons so as to project inward.

13. ln :i locomotive, the combination of a trarne Comprising' sidegirders, a fire-box eX- tending the full width of said girders,longitudinal supports secured to said girders conr sisting ot'channel-bars having supporting'- 5 ledges formed in the upper und inneredges l thereof, and grates extendingl between seid l supports undresting in such ledges. r This specification signed and witnessed thisI5 l first day of March, A. l). 1902. l CORNELIUS VANDERBIL". .lnpresence of- VM. \V. CLoUsno, l LOUIS A. SHEPARD.

